How do I choose between the 41mm and 45mm Pixel Watch 4 sizes?

Both sizes offer identical breakthrough features including satellite SOS, user-serviceable design, and Gemini AI coaching. The 45mm provides larger display and superior battery life (40 hours vs 30 hours), fitting wrists 150-215mm circumference. The 41mm offers classic, lighter profile fitting wrists 130-210mm circumference. Choice depends on display preference, battery needs, and wrist fit.

What breakthrough features does Pixel Watch 4 offer that competitors cannot match?

Four revolutionary capabilities no competitor offers: (1) Satellite SOS emergency communication enabling distress signals without cellular coverage, (2) User-serviceable design with replaceable battery and display components, (3) Actua 360 domed display with 3000 nits brightness, (4) Gemini AI personal health coach with 24/7 guidance and raise-to-talk activation.

Which phones are compatible with the Pixel Watch 4?

Compatible with Google Pixel and Android phones running Android 11.0 or newer. Optimal experience achieved with Pixel phones for exclusive satellite emergency communication, Gemini AI integration, and camera remote control capabilities. Google Account required for full feature access.

How does the satellite SOS emergency communication work?

Industry-first capability enabling distress signals and emergency service communication in remote locations without cellular or Wi-Fi coverage. Uses advanced satellite network technology with 2-year free service included and global coverage. Functions in areas where no other smartwatch can operate.

Is the Pixel Watch 4 water resistant?

Yes, features comprehensive water resistance with 50 meters (5 ATM) depth capability and IP68 protection. Supports ocean swimming, pool activities, showering, water sports, and complete submersion protection with Water Lock Mode for automatic water ejection.

How does the revolutionary repairability design work?

First user-serviceable Pixel Watch with replaceable battery and display components. Enables cost-effective maintenance at fraction of full device cost, supporting 5+ year usage with component replacement. User-accessible battery replacement takes 15-30 minutes with official kits. Display replacement available through professional service network.

What advanced health features are available on Pixel Watch 4?

Breakthrough Loss of Pulse Detection (FDA-cleared), Gemini AI health coach with 24/7 guidance, 18% more accurate sleep tracking, multi-path heart rate sensor, skin temperature monitoring, ECG readings, and continuous SpO2 monitoring. Includes 6-month Fitbit Premium trial for advanced analytics.

Do I need a phone to use the Pixel Watch 4?

Initial pairing requires compatible Android phone. LTE model enables independent operation for calls, texts, music, Google Pay, and Gemini Assistant. Bluetooth/Wi-Fi model requires phone proximity or Wi-Fi connection. Both models include satellite SOS emergency communication operating independently.

what3words: Navigation & Maps

Name: Google Pixel Watch 4
Brand: Google
Availability: PreOrder
Rating: 4.8 (1250 reviews)

what3words brings precision location to your WearOS watch with 10 million+ downloads and a 4.0★ rating, converting every 3-meter square on Earth into a simple three-word address.

Best for: Precise location sharing, emergency situations, parking locations

Download: Play Store | Phone: Standalone | Offline: Partial (compass mode) | Battery: Low

WearOS Features

Find and share exact locations from your wrist.

3-Meter Precision: Every location has a unique three-word address for exact navigation.
Offline Compass: Find your current what3words address without internet connection.
Emergency Ready: Trusted by 85% of UK emergency services for location sharing.
50+ Languages: Available globally in over 50 languages.

Emergency Essential

Know your three-word address to help emergency services find you quickly in a crisis.

Compatibility

Detail	Value
Developer	what3words
Rating	4.0★ (46.3K reviews)
Downloads	10 million+
Price	Free
Category	Maps & Navigation
App Size	~25 MB
Content Rating	PEGI 3
Last Updated	Dec 2025
Requires	`Android 7.1+`

Getting Started

Install what3words on your WearOS smartwatch from the Play Store.
Open the app to find your current three-word address.
Save favorite locations to organized lists for quick access.
Share addresses with contacts for easy meetups.
Use Compass mode to navigate offline without internet.
Integrate with Google Maps or Apple Maps for turn-by-turn directions.

Key Features

Precision location that goes beyond traditional addresses.

Easy Sharing: Share three words instead of complex GPS coordinates.
Save Locations: Organize favorite spots into categorized lists.
Map Integration: Compatible with Google Maps and Apple Maps for navigation.
Photo Tagging: Add what3words addresses to photos for location memory.

Travel Tip

Save the what3words address of your parked car to find it easily in large lots.

Why what3words on WearOS

Emergency Standard: Used by 85% of UK emergency services for precise location.
Offline Ready: Find your address without internet using Compass mode.
Universal System: Works anywhere on Earth in 50+ languages.
Simple Sharing: Three words are easier to communicate than coordinates.

WearOS Features​

Emergency Essential

Compatibility​

Getting Started​

Key Features​